WHITLOCKITE CERAMIC AND ITS USE IN BONE PROSTHESIS

摘要

THE INVENTION RELATES TO A NEW POLYCRYSTALLINE CERAMIC WHITLOCKITE IN POROUS OR NON-POROUS FORM, IN PARTICULAR IN TRANSLUCENT POLYCRYSTALLINE CERAMIC FORM, ISOTROPIC AND PRACTICALLY WITHOUT PORES, THIS LATEST CERAMIC CONSISTING OF WHISTLOCKITE CONTAINING APPROXIMATELY 0.1 RESISTANCE TO 2.2 CRYSTALLINE IN ITS WEIGHT. OF SULPHATE ION AND HAVING AN AVERAGE CRYSTALLITE SIZE OF ABOUT 0.3 TO 3 MICRONS AND A DENSITY GREATER THAN ABOUT 98 OF THE THEORETICAL DENSITY OF B-WHITLOCKITE. THE PREPARATION OF SAID CERAMICS AS WELL AS NEAR NON-CERAMIC WHITLOCKITE IS ALSO DESCRIBED. /P P THE CERAMIC PRODUCTS CAN BE USED AS BIOLOGICAL IMPLANT MATERIALS, IN PARTICULAR AS RESORBABLE ARTIFICIAL BONE PROSTHESES.